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Standard XII

Chemistry

Ozone

A binary salt...

Question

A binary salt (X) of alkali metal on heating with sulphur give (Y); (Y) with $B a C l_{2}$ solution gave white ppt.
(Z) is insoluble in conc $H C l$ . 14.2 g of (X) gave 23.3 g of (Z). Identify (X), (Y) and (Z) and explain reactions.

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Solution

$2 K O_{2} (x) + S ⟶ K_{2} S O_{4} (y) + B a C l ⟶ B a S O_{4} (z)$
$2 \times 71 ℊ 233 ℊ$
$∵ 142 ℊ K O_{2}$ give $233 ℊ$ of $B a S O_{4}$
$14.2 ℊ$ of $K O_{2}$ gives $23.3 ℊ$ of $B a S O_{4}$

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A binary salt (X) of alkali metal on heating with sulphur give (Y); (Y) with BaCl2 solution gave white ppt. (Z) is insoluble in conc HCl. 14.2 g of (X) gave 23.3 g of (Z). Identify (X), (Y) and (Z) and explain reactions.

2KO2(x)+S⟶K2SO4(y)+BaCl⟶BaSO4(z)2×71ℊ233ℊ∵142ℊKO2 give 233ℊ of BaSO414.2ℊ of KO2 gives 23.3ℊ of BaSO4

A binary salt (X) of alkali metal on heating with sulphur give (Y); (Y) with $B a C l_{2}$ solution gave white ppt.
(Z) is insoluble in conc $H C l$ . 14.2 g of (X) gave 23.3 g of (Z). Identify (X), (Y) and (Z) and explain reactions.

$2 K O_{2} (x) + S ⟶ K_{2} S O_{4} (y) + B a C l ⟶ B a S O_{4} (z)$
$2 \times 71 ℊ 233 ℊ$
$∵ 142 ℊ K O_{2}$ give $233 ℊ$ of $B a S O_{4}$
$14.2 ℊ$ of $K O_{2}$ gives $23.3 ℊ$ of $B a S O_{4}$